METHODS AND SYSTEMS FOR MANAGING A VENTILATOR PATIENT WITH A CAPNOMETER
This disclosure describes systems and methods for managing the ventilation of a patient being ventilated by a medical ventilator. The disclosure describes a novel approach of displaying integrated ventilator information with capnometer data. The disclosure further describes a novel approach for determining if the ventilator breathing circuit is occluded or disconnected.
1 . A method for managing ventilation of a patient being ventilated by a medical ventilator, the method comprising:
monitoring at least one CO 2 parameter;
monitoring breathing circuit pressure;
monitoring exhaled flow and calculating exhaled volume therefrom;
determining that the at least one CO 2 parameter is less than a predetermined CO 2 threshold amount, the exhaled pressure is less than a predetermined threshold pressure, and the exhaled volume is less than a predetermined threshold volume; and
executing a disconnection alarm.
2 . The method of claim 1 , wherein the at least one CO 2 parameter comprises at least one of ETCO 2 and VCO 2 .
3 . The method of claim 1 , further comprising:
displaying the disconnection alarm on at least one of a ventilator display or a capnometer display.
4 . The method of claim 1 , wherein at least one of the predetermined CO 2 threshold amount, the predetermined threshold pressure, and the predetermined threshold volume is received from operator input.
5 . A method for managing ventilation of a patient being ventilated by a medical ventilator, the method comprising:
monitoring at least one CO 2 parameter of gas in the patient circuit;
monitoring at least one of exhaled volume and delivered volume;
determining that the at least one CO 2 parameter drops by a predetermined amount in a predetermined amount of time concurrently with a drop in the at least one of the exhaled volume by a predetermined amount and the delivered volume by a predetermined amount; and
executing an occlusion alarm.
6 . The method of claim 5 , wherein the at least one CO 2 parameter comprises at least one of ETCO 2 and VCO 2 .
7 . The method of claim 5 , further comprising:
displaying the occlusion alarm on at least one a ventilator display or a capnometer display
8 . The method of claim 5 , wherein at least one of the predetermined drop amount of the at least one CO 2 parameter, the predetermined amount of time, and the predetermined drop amount of the exhaled volume and the delivered volume is received from operator input.
9 . A medical ventilator-capnometer system, comprising:
a pneumatic gas delivery system, the pneumatic gas delivery system adapted to control a flow of gas from a gas supply to a patient via a ventilator breathing circuit;
a flow sensor;
a pressure sensor;
a capnometer, the capnometer monitors an amount of carbon dioxide in respiration gas from the patient in the ventilator breathing circuit in order to monitor VCO 2 and ETCO 2 ;
a breathing circuit module, the breathing circuit module determines that concurrently at least one of the VCO 2 and the ETCO 2 are below a predetermined amount, pressure is below a predetermined amount, and an exhaled volume is below a predetermined amount in the ventilator breathing circuit based on flow sensor readings, pressure sensor readings, and capnometer readings before executing a disconnection alarm; and
a processor in communication with the pneumatic gas delivery system, the flow sensor, the pressure sensor, the capnometer, and the breathing circuit module.
10 . The medical ventilator-capnometer system of claim 9 , further comprising:
at least one of a ventilator display and a capnometer display.
11 . The medical ventilator-capnometer system of claim 9 , further comprising:
at least one of a visual disconnection alarm, an audio disconnection alarm, and a vibrational disconnection alarm.
12 . The medical ventilator-capnometer system of claim 9 , further comprising:
an operator interface, the operator interface allows an operator to select and input at least one of the predetermined amount of VCO 2 , the predetermined amount of ETCO 2 , the predetermined amount of pressure, and the predetermined amount of exhaled volume.
13 . A medical ventilator-capnometer system, comprising:
a pneumatic gas delivery system, the pneumatic gas delivery system adapted to control a flow of gas from a gas supply to a patient via a ventilator breathing circuit;
a flow sensor;
a capnometer, the capnometer monitors an amount of carbon dioxide in respiration gas from the patient in the ventilator breathing circuit in order to monitor VCO 2 and ETCO 2 ;
a breathing circuit module, the breathing circuit module determines that at least one of the VCO 2 and the ETCO 2 drops by a predetermined amount within a predetermined amount of time, concurrently as at least one of delivered volume and exhaled volume drop by a predetermined amount in the ventilator breathing circuit based on flow sensor readings and capnometer readings before executing an occlusion alarm; and
a processor in communication with the pneumatic gas delivery system, the flow sensor, the capnometer, and the breathing circuit module.
14 . The medical ventilator-capnometer system of claim 13 , further comprising:
at least one of a ventilator display and a capnometer display.
15 . The medical ventilator-capnometer system of claim 13 , further comprising:
at least one of a visual occlusion alarm, an audio occlusion alarm, and a vibrational occlusion alarm.
16 . The medical ventilator-capnometer system of claim 13 , further comprising:
an operator interface, the operator interface allows an operator to select and input at least one of the predetermined drop amount of the VCO 2 , the predetermined drop amount of the ETCO 2 , the predetermined amount of time, the predetermined drop amount of the exhaled volume, and the predetermined drop amount of the delivered volume.
17 . A computer-readable medium having computer-executable instructions for performing a method for managing ventilation of a patient being ventilated by a medical ventilator-capnometer system, the method comprising:
repeatedly monitoring at least one CO 2 parameter, the at least one CO 2 parameter comprises ETCO 2 and VCO 2 ;
repeatedly monitoring breathing circuit pressure;
repeatedly monitoring exhaled volume;
repeatedly determining that the at least one CO 2 parameter is less than a predetermined threshold amount, the exhaled pressure is less than a predetermined pressure threshold, and the exhaled volume is less than a predetermined volume threshold; and
repeatedly executing a disconnection alarm.
18 . A medical ventilator-capnometer system, comprising:
means for monitoring at least one CO 2 parameter, the at least one CO 2 parameter comprises ETCO 2 and VCO 2 ;
means for monitoring at least one of exhaled volume and delivered volume;
means for determining that the at least one CO 2 parameter drops by a predetermined amount in a predetermined amount of time concurrently with a drop in the at least one of the exhaled volume by a predetermined amount and the delivered volume by a predetermined amount; and
means for executing an occlusion alarm.